International Klein Blue

#0324B0

About International Klein Blue

International Klein Blue (IKB), also known as #0324B0, is a deep blue hue renowned for its intensity. It was developed by the French artist Yves Klein in collaboration with a Parisian paint dealer, Edouard Adam, to perfectly capture the color's visual impact. Klein registered this color as a trademark in 1957, although the trademark was never enforced. IKB's unique quality stems from its matte finish, which allows the pigment to retain its vibrancy and depth. Unlike many glossy paints, IKB absorbs light, creating a sense of boundless space and optical illusion. The color has become synonymous with Klein's art and his exploration of immateriality, inspiring countless artists, designers, and creatives across various disciplines. It represents much more than just a color, it is a cultural milestone.

The hex color #0324B0, also known as International Klein Blue, presents significant accessibility challenges, primarily due to its low luminance. When used as a foreground color against a white or light background, it can be difficult for individuals with visual impairments, such as low vision or color blindness, to perceive the text or elements clearly. The contrast ratio is far below the WCAG (Web Content Accessibility Guidelines) recommended minimum of 4.5:1 for normal text and 3:1 for large text. To improve accessibility, consider using this color sparingly for decorative purposes rather than essential information. If used for text, pair it with a very light color like white or a very pale yellow to maximize contrast. Alternatively, use a darker shade of blue or a contrasting color from the opposite side of the color wheel to ensure sufficient contrast and readability for all users. Tools for checking color contrast ratios are readily available online and should be used during the design process.

Shades

Digital Color Formats

RGB
3 36 176
RGB3 36 176
Red
Green
Blue
HSL
228.55 96.65% 35.1%
228.5596.6535.1HSL
Hue
Saturation
Lightness
HWB
228.55 1.18% 30.98%
228.551.1830.98HWB
Hue
Whiteness
Blackness
hex#0324B0
rgb3 36 176
hsl228.55 96.65% 35.1%
cmyk98.3% 79.55% 0% 30.98%
hwb228.55 1.18% 30.98%
xyz8.5 4.42 41.48
CMYK
98.3% 79.55% 0% 30.98%
98.379.55030.98CMYK
Cyan
Magenta
Yellow
Key
XYZ
8.5 4.42 41.48
8.54.4241.48XYZ
X
Y
Z

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